Recording apparatus



May 6, 1924.

A. M. EWING RECORDING APPARATUS Filed Sent. 2. 1922 2 shets-sneez 1 May 6, 1924. 1,492,559

A M. EWING RECORDING AFPARATUS Filed Sent. 2. 1922 '2 Sheets-Sheet 2 Patented May 6, 1924.

UNITED STATES PATENT OFFICE.

ADLAI M. EWING, F IOLA, KANSAS.

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Application filed September 2, 1922. Serial No. 585,933.

tus; and I do hereby declare the following ,to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to recording apparatus designed primarily for use in connection with gas meters but is not limited in its application to such use. The invention has for its object to provide a recording apparatus which will permit the use of a continuous tape instead of the circular chart which is customarily a plied. The invention consists in the mac anism for supporting the tape and for'driving the same at a uniform rate of speed past the marking pens.

The various features of novelty and invention will appear from the detailed description taken in connection with the accompanying drawings forming art of this specification, and wi l he define in the appended claim.

In the drawings- Figure 1 is a front elevation of the improved recording means in connection with a well known t pe of meter, and

Fig. 2 is a si e elevation thereof, parts be ing in section.

,Referring now to the drawings, 1 designates a removable top on a gas meter 2 and 3 a bracket extending laterally from the said top. Allixed to this bracket 3 is a housing or support 4 in which the recording mechanism is mounted.

The recording device is adapted to record both static and differential pressures. 5 indicates the static pen which at its lower end, is secured to a coil tube .6, this tube being connected to a pipe 7 which is in connection with the upstream side of the meter, as will be readily understood. I

The difierential pen is indicated at 8 and afiixed at its lower end to a shaft 9 which projects from a bearing 10 projecting laterally of the meter. This shaft is actuated by a. diflierential mechanism contained within the top 1. v

The chart or tape with which the pens 5 and 8 are adapted to cooperate is indicated at l) and is an elongated member adapted to be unreeled from a spool 12 which is suitably supported in arms 13 projecting from the housing 4.. This tape is adapted to be held against a portion of the surface of a drum 14, this drum constituting a driving member and being adapted to be driven by suitable clock work not shown. 14 is suitably supported in lateral supports 15 and is provided with spurs 16 which are adapted to enter erforations in the sides of the tape where y the tape or chart will be positively driven by the drum. Disposed between the spool 12 and drum 14: are guides 17 for properly guiding the tape from the spool 12 onto the drum 1 1.

The tape or chart as it leaves the drum 14:

is wound on a reel 18 which is removably mounted in arms 19 extending laterally ,from the housing 4. This reel is provided with flanges 20 which not only guide the tape onto the reel, but also serve a purpose hereinafter mentioned.

Mounted adjacent the reel 18 is a means for severing the chart or tape. or bar extending across the housing and over which the chart must ass as shown in Fig. 21 22 is a knife whic i is mounted on bar 21 in a manner to permit said knife to be moved or tilted by hand toward the bar 21 for the urpose of holding or clamping the chart uring severing. The knife is normally maintained in spaced relation from the bar 21 by means of springs 23 at the ends of the knife and bar.

The tape or chart C as it passes from the s 001 12, at its point of contact with the rum 14 is held against the drum by means of rollers 24 mounted on a shaft 25, the ends of which are mounted in arms 26 pivoted to fingers 27 extending from the'support 15 on which the drum 14 is mounted. The rollers are drawn toward the drum by tension springs 28 as shown in Fig. 2. At some distance removed from the rollers is another set of rollers 29 holding the chart or tape against drum 14:, arms 30 supporting these rollers and springs 31 acting to draw the rollers toward the drum.

The rollers 29 are afiixed on a shaft 32 and also afiixed to said shaft are rollers 33 which are in frictional contact with the flanges 20 on the reel 18. These rollers 33 are adapted to drive the reel 18 so as to wind up the to e or chart 0 onto said reel.-

It will now be seen that drum 14 serves as a table or support for the tape or chart '21 is a shoe- The drum 2 

